all basics that required for bootstrapping new project with firebase-react-app

.eslintrc.json

{
  "parser": "babel-eslint",
  "extends": "airbnb",
  "plugins": [
    "babel"
  ],
  "env": {
    "browser": true,
    "jest": true,
    "node": true
  },
  "rules": {
    "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx"] }],
    "react/prop-types": 0,
    "semi": [2, "never"],
    "no-use-before-define": ["error", { "functions": false, "classes": true }],
    "no-unexpected-multiline": 2
  }
}

.gitignore

# Created by https://www.gitignore.io/api/node,linux,macos,windows,firebase

### Firebase ###
.idea
**/node_modules/*
**/.firebaserc
functions/
dist/

### Firebase Patch ###
.runtimeconfig.json

### Linux ###
*~

# temporary files which can be created if a process still has a handle open of a deleted file
.fuse_hidden*

# KDE directory preferences
.directory

# Linux trash folder which might appear on any partition or disk
.Trash-*

# .nfs files are created when an open file is removed but is still being accessed
.nfs*

### macOS ###
# General
.DS_Store
.AppleDouble
.LSOverride

# Icon must end with two \r
Icon

# Thumbnails
._*

# Files that might appear in the root of a volume
.DocumentRevisions-V100
.fseventsd
.Spotlight-V100
.TemporaryItems
.Trashes
.VolumeIcon.icns
.com.apple.timemachine.donotpresent

# Directories potentially created on remote AFP share
.AppleDB
.AppleDesktop
Network Trash Folder
Temporary Items
.apdisk

### Node ###
# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*

# Runtime data
pids
*.pid
*.seed
*.pid.lock

# Directory for instrumented libs generated by jscoverage/JSCover
lib-cov

# Coverage directory used by tools like istanbul
coverage

# nyc test coverage
.nyc_output

# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
.grunt

# Bower dependency directory (https://bower.io/)
bower_components

# node-waf configuration
.lock-wscript

# Compiled binary addons (https://nodejs.org/api/addons.html)
build/Release

# Dependency directories
node_modules/
jspm_packages/

# TypeScript v1 declaration files
typings/

# Optional npm cache directory
.npm

# Optional eslint cache
.eslintcache

# Optional REPL history
.node_repl_history

# Output of 'npm pack'
*.tgz

# Yarn Integrity file
.yarn-integrity

# dotenv environment variables file
.env

# parcel-bundler cache (https://parceljs.org/)
.cache

# next.js build output
.next

# nuxt.js build output
.nuxt

# vuepress build output
.vuepress/dist

# Serverless directories
.serverless

### Windows ###
# Windows thumbnail cache files
Thumbs.db
ehthumbs.db
ehthumbs_vista.db

# Dump file
*.stackdump

# Folder config file
[Dd]esktop.ini

# Recycle Bin used on file shares
$RECYCLE.BIN/

# Windows Installer files
*.cab
*.msi
*.msix
*.msm
*.msp

# Windows shortcuts
*.lnk


# End of https://www.gitignore.io/api/node,linux,macos,windows,firebase

FRA_dev_tools.sh

# devDependencies 
npx install-peerdeps --dev eslint-config-airbnb && npm i -D flow-bin flow-typed eslint-plugin-flowtype firebase-tools babel-eslint @rulsky/firebase-react-app

# dependencies
npm i express firebase-admin firebase-functions react react-dom react-hot-loader styled-components

# additional tools
npm i -D husky enzyme enzyme-adapter-react-16 jest

package.json

{
  "husky": {
    "pre-commit": "npm lint",
    "pre-push": "npm test"
  },
  "jest": {
    "setupTestFrameworkScriptFile": "jest-enzyme",
    "testEnvironment": "enzyme",
    "testEnvironmentOptions": {
      "enzymeAdapter": "react16"
    },
    "testPathIgnorePatterns": [
      "/node_modules/",
      "<rootDir>/functions/"
    ],
    "watchPathIgnorePatterns": [
      "<rootDir>/functions/",
      "<rootDir>/dist/",
      "<rootDir>/public/"
    ],
    "transform":{
      "\\.js$": "@rulsky/firebase-react-app/jestTransformer.js"
    }
  }
}